45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
|
// Copyright 2019 Espressif Systems (Shanghai) PTE LTD
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
// you may not use this file except in compliance with the License.
|
||
|
|
// You may obtain a copy of the License at
|
||
|
|
//
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
//
|
||
|
|
// Unless required by applicable law or agreed to in writing, software
|
||
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
// See the License for the specific language governing permissions and
|
||
|
|
// limitations under the License.
|
||
|
|
#include <string.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include "esp_log.h"
|
||
|
|
#include "esp_eth.h"
|
||
|
|
#include "eth_phy_regs_struct.h"
|
||
|
|
|
||
|
|
static const char *TAG = "esp_eth.phy";
|
||
|
|
|
||
|
|
esp_err_t esp_eth_detect_phy_addr(esp_eth_mediator_t *eth, uint32_t *detected_addr)
|
||
|
|
{
|
||
|
|
if (!eth || !detected_addr) {
|
||
|
|
ESP_LOGE(TAG, "eth and detected_addr can't be null");
|
||
|
|
return ESP_ERR_INVALID_ARG;
|
||
|
|
}
|
||
|
|
uint32_t addr_try = 0;
|
||
|
|
uint32_t reg_value = 0;
|
||
|
|
for (; addr_try < 16; addr_try++) {
|
||
|
|
eth->phy_reg_read(eth, addr_try, ETH_PHY_IDR1_REG_ADDR, ®_value);
|
||
|
|
if (reg_value != 0xFFFF && reg_value != 0x00) {
|
||
|
|
*detected_addr = addr_try;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (addr_try < 16) {
|
||
|
|
ESP_LOGD(TAG, "Found PHY address: %d", addr_try);
|
||
|
|
return ESP_OK;
|
||
|
|
} else {
|
||
|
|
ESP_LOGE(TAG, "No PHY device detected");
|
||
|
|
return ESP_ERR_NOT_FOUND;
|
||
|
|
}
|
||
|
|
}
|